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@article{MZM_1990_48_3_a4, author = {S. B. Vakarchuk}, title = {Approximations of differentiable functions of several variables}, journal = {Matemati\v{c}eskie zametki}, pages = {37--44}, publisher = {mathdoc}, volume = {48}, number = {3}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_3_a4/} }
S. B. Vakarchuk. Approximations of differentiable functions of several variables. Matematičeskie zametki, Tome 48 (1990) no. 3, pp. 37-44. http://geodesic.mathdoc.fr/item/MZM_1990_48_3_a4/